Other facts from our historical weather data: Which months have the greatest rainfall in Shangri-La? Most rainfall (rainy season) is seen in June, July, August and September. Which is the warmest month in Shangri-La? June has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Shangri-La? The coldest month is January with an average maximum temperature of 3°C (37°F). Which is the wettest month in Shangri-La? July tops the wettest month list with 249mm (9.8 in) of rainfall. Which is the driest month in Shangri-La? December is the driest month with 19mm (0.7 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.